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Glass-Crystal Boundaries in Liquid-Phase Sintered Ceramics

Published online by Cambridge University Press:  14 March 2011

N. Ravishankar  and
C. Barry Carter
N. Ravishankar
Affiliation:
Dept. of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. S.E., Minneapolis MN 55455, USA
C. Barry Carter
Affiliation:
Dept. of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. S.E., Minneapolis MN 55455, USA
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Abstract

The interface between dewet glass droplets and the free surface of a crystal and the interface between the intergranular glass and adjoining crystalline grains have been examined with particular emphasis on the influence of the crystallography of the free surface and the grain boundary. The wetting of liquid on the free surface has been shown to depend on the surface structure. The migration of boundaries containing a liquid phase has been studied. The migration is initiated by the difference in surface energy of the bounding planes. Faceting of the grain boundary planes has been examined. It is proposed that the boundary migrates by the motion of the facets.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 620: Symposium M – Morphology & Dynamics of Crystal Surfaces in Complex… , 2000 , M2.8.1
Copyright
Copyright © Materials Research Society 2000

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References

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